Image forming apparatus and methods used in the image forming apparatus

ABSTRACT

An image forming apparatus in which applications can be installed is provided, in which the image forming apparatus includes an application information obtaining part for obtaining application information that is used for determining whether an application is installable in the image forming apparatus.

CROSS REFERENCE TO RELATED APPLICATION

This is a Divisional Application of application Ser. No. 10/660,723,filed Sep. 12, 2003, which is based upon and claims benefit of priorityfrom the prior Japanese Patent Application Nos. 2002-269280, filed Sep.13, 2002; 2002-269281, filed Sep. 13, 2002; 2002-269282, filed Sep. 13,2002; 2002-307636, filed Sep. 14, 2002; 2002-307637, filed Sep. 14,2002; 2003-317280, filed Sep. 9, 2003; 2003-317281, filed Sep. 9, 2003;2003-317282, filed Sep. 9, 2003; and 2003-317283, filed Sep. 9, 2003;the contents of all of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an image forming apparatus thatprovides user services relating to image forming processes such ascopying, printing, scanning, facsimile and the like.

2. Description of the Related Art

Recently, an image forming apparatus (to be referred to as a compoundmachine hereinafter) that includes functions of a printer, a copier, afacsimile, a scanner and the like in a cabinet is generally known. Thecompound machine includes a display part, a printing part and an imagepickup part and the like in a cabinet. In the compound machine, threepieces of software corresponding to the printer, copier and facsimilerespectively are provided, so that the compound machine functions as theprinter, the copier, the scanner and the facsimile respectively byswitching the software.

According to such a conventional compound machine, application programscorresponding to each of the capabilities such as printing, copying,faxing and scanning are launched. As for the existing applicationprograms, since resource amounts to be used by the applications, andconsistency of versions between applications and the system of thecompound machine and the like are known beforehand, the applications canbe simply installed into the compound machine and can be launched.Therefore, for example, it is not necessary to check resource amounts tobe used by the applications before installing the applications or beforelaunching the applications.

Since the conventional compound machine is provided with each softwarefor the printer, the copier, the scanner and the facsimile individually,much time is required for developing the software. Therefore, theapplicant has developed an image forming apparatus (compound machine)including hardware resources, a plurality of applications, and aplatform including various control services provided between theapplications and the hardware resources. The hardware resources includea display part, a printing part and an image pickup part. Theapplications perform processes intrinsic for user services of printer,copier and facsimile and the like. The platform includes various controlservices performing management of hardware resources necessary for atleast two applications commonly, performing execution control of theapplications, and performing image forming processes, when a userservice is executed.

According to the compound machine, since the control services areprovided separately from the applications, a new application that isdeveloped by a user or a third party vendor can be installed in thecompound machine. Therefore, there are following problems.

As for the existing applications such as the copy application, since theversion and a necessary resource amount are known beforehand, there isno possibility of malfunction due to inconsistency of version or lack ofresources when the application is installed and launched. However, as tothe new application developed by the third vendor or the user, thestatus (version and available resources and the like) of the compoundmachine is not considered when developing the new application. Thus,there is a possibility that the operation of the compound machinebecomes unstable when the new application is launched. Moreparticularly, for example, when a necessary resource amount used by thenew application is larger than the available resource amount in thecompound machine, the operation of the compound machine may be stoppeddue to lack of the resource.

In addition, as for the existing applications for copying, printing,faxing and scanning, these applications are configured such that theyoperate stably even when they are executed simultaneously in thecompound machine. However, as for the new application developed by thethird party, the new application is not necessarily developed inconsideration of compatibility with other applications. Therefore, in acase when the new application and another application are mutuallyincompatible, if the new application is executed simultaneously with theanother application, the new application operates abnormally or does notoperate. For solving this problem, it can be considered to assignpriorities to applications. However, the priorities should be updatedeach time when a new application is installed. In addition, for ageneral user, it is difficult to determine priorities of theapplications.

In addition, among new applications developed by the third vendor, theremay be a new application that should be executed with anotherapplication. If a user executes only the new application that needs theanother application, the new application can not provide its fullcapabilities, or the application may be stopped.

SUMMARY OF THE INVENTION

A first object of the present invention is to provide an image formingapparatus and a method for obtaining application information fordetermining whether an application is installable. A second object ofthe present invention is to provide an image forming apparatus and amethod for displaying the application information on an operation panel.A third object of the present invention is to provide an image formingapparatus and a method for performing launch restriction processaccording to information on resources. A fourth object of the presentinvention is to provide an image forming apparatus and a method forperforming launch control for incompatible or indispensableapplications.

The above-mentioned object is achieved by an image forming apparatus inwhich applications can be installed, in which the image formingapparatus includes: an application information obtaining part forobtaining application information that is used for determining whetheran application is installable in the image forming apparatus.

According to the present invention, it can be determined whether anapplication is installable.

The above-mentioned object is also achieved by an image formingapparatus including an operation panel for displaying or inputtingoperation information, in which the image forming apparatus includes:

an information obtaining part for obtaining application information onan application to be used in the image forming apparatus; and

a display part for displaying the application information or informationrelated to the application information on the operation panel.

According to the present invention, since application information isdisplayed on the operation panel, the user can determine whether anapplication is installable.

The above-mentioned object is also achieved by an image formingapparatus in which a plurality of applications can be installed, inwhich the image forming apparatus includes:

an information obtaining part for obtaining necessary resourceinformation for executing an application and available resourceinformation in the image forming apparatus; and

a launch restriction part for comparing the necessary resourceinformation and the available resource information, and performinglaunch restriction process on the application according to the result ofcomparison between the necessary resource information and the availableresource information.

According to the present invention, the image forming apparatus canprevent erroneous launch of an application for which resources arelacking. Thus, the image forming apparatus can operate stably.

The above-mentioned object is also achieved by an image formingapparatus in which a plurality of applications can be installed, inwhich the image forming apparatus includes:

a part for referring to a database which includes, for each application,information on propriety of combination of applications; and

a launch control part for performing launch control process on anapplication according to the information on propriety.

According to the present invention, proper applications can be launchedaccording to the information on propriety of combination ofapplications.

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features and advantages of the present invention willbecome more apparent from the following detailed description when readin conjunction with the accompanying drawings, in which:

FIG. 1 is a block diagram of a compound machine according to the firstembodiment of the present invention;

FIG. 2 is a block diagram of the hardware configuration of the compoundmachine according to the first embodiment;

FIG. 3 is a block diagram showing the configuration of the VAS 140, andrelationship among the VAS 140, each application, the control servicelayer 150 and the general OS 121 according to the first embodiment;

FIG. 4 shows relationship between the VAS 140, and the hard disk 200that stores application information, the application information table106, and the NVRAM 104;

FIG. 5 shows a whole procedure for performing install process oruninstall process in the compound machine 100;

FIG. 6 is a flowchart showing a subroutine of application informationobtaining process in step S401 in FIG. 5;

FIG. 7 shows an example of a program description (main function) of anapplication including the provisional launch function;

FIG. 8 shows a sequence between the VAS and the application;

FIG. 9 shows an authentication screen of an initial setting screenaccording to the second embodiment;

FIGS. 10-16 show screens for file copy operations according to thesecond embodiment;

FIGS. 17-28 show screens for install operations according to the secondembodiment;

FIGS. 29-36 shows screens for uninstall operations according to thesecond embodiment;

FIG. 37 shows the configuration of the net file application according tothe second embodiment;

FIG. 38 is a block diagram showing the configuration of the VAS 140, andthe relationship among the VAS 140, the applications, the controlservice layer 150 and the general OS 121 according to the thirdembodiment;

FIG. 39 shows an example of the resource use information file 1201;

FIG. 40 shows an example of the proc structure 211 that is referred toby the resource use information obtaining thread 1141;

FIG. 41 shows a figure of a screen displayed on the operation panel inwhich launch restriction levels are shown by using a histogram;

FIG. 42 shows a launch setting screen in which launch setting has beenperformed for “simple scanner” and “simple copy”;

FIG. 43 shows the launch setting screen in which “simple print” isselected;

FIG. 44 is a screen for advising to select another application;

FIG. 45 is an example of a screen in which launch setting can beperformed even if enough memory is not included in the compound machine;

FIG. 46 is a screen displayed when an application for which any key isnot assigned is selected;

FIG. 47 is a screen showing completion of launch setting;

FIG. 48 is a screen shown after the launch setting ends;

FIGS. 49-53 shows screens in which release of launch setting isperformed;

FIG. 54 shows a procedure performed by the VAS 140 when performinglaunch setting according to the third embodiment;

FIG. 55 is a flowchart for performing launch restriction process when anapplication is launched according to the third embodiment;

FIG. 56 shows a flowchart for explaining the operation of the VAS 140when the resource use information file is produced;

FIG. 57 is a block diagram of the compound machine of the fourthembodiment;

FIG. 58 is a figure showing a configuration of the VAS 841-848 of thecompound machine 800 of the fourth embodiment;

FIG. 59 shows the configuration of the VAS 140 of the fifth embodiment,and shows relationship between the VAS 140, each application, thecontrol service layer 150 and the general OS 121;

FIG. 60 shows an example of the application compatibility informationfile 2201;

FIG. 61 shows another file according to the fifth embodiment;

FIG. 62 shows an example of a user selection screen for applicationsthat can not be launched at the same time according to the fifthembodiment;

FIG. 63 shows a flowchart of the procedure of the application launchrestriction process by the VAS 140 according to the fifth embodiment;

FIG. 64 shows a flowchart of the procedure of the process of step S2505according to the fifth embodiment;

FIG. 65 shows a flowchart of the procedure of launch restriction processaccording to the fifth embodiment;

FIG. 66 is a figure showing a configuration of the VASes 941-948 of thecompound machine 100 of the sixth embodiment, and relationship among theVASes 941-948, each application, control service layer 150 and generalOS 121;

FIG. 67 shows the configuration of the VAS 140 of seventh embodiment,and shows relationship between the VAS 140, each application, thecontrol service layer 150 and the general OS 121;

FIG. 68 is an example of the indispensable application information file2202;

FIG. 69 is an example of a screen for prompting the user to launch anindispensable application (plug-in) for a launch-requested-application(browser);

FIG. 70 shows a flowchart of the procedure of the application launchcontrol process by the VAS 140 according to the seventh embodiment;

FIG. 71 shows a flowchart of the procedure of the process of step S2804according to the seventh embodiment;

FIG. 72 shows a flowchart of the procedure of launch control processaccording to the seventh embodiment;

FIG. 73 is a figure showing a configuration of the VASes 941-948 of thecompound machine 100, and relationship among the VASes 941-948, eachapplication, control service layer 150 and general OS 121;

FIG. 74 shows a database of the eighth embodiment;

FIG. 75 shows the procedure of launch control by the compound machine100 according to the eighth embodiment;

FIGS. 76-81 show screens displayed when launch setting is performedaccording to the eighth embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following, embodiments of the image forming apparatus and themethod will be described with reference to figures.

First Embodiment

FIG. 1 is a block diagram of an image forming apparatus (to be referredto as a compound machine hereinafter) according to the first embodimentof the present invention.

As shown in FIG. 1, the compound machine 100 includes hardware resourcesand a software group 110. The hardware resources include a black andwhite line printer (B&W LP) 101, a color laser printer 102, and hardwareresources 103 such as a scanner, a facsimile, a hard disk, memory (RAM,NV-RAM, ROM and the like) and a network interface. The software group110 includes a platform 120, applications 130 and a virtual applicationservice 140 (to be referred to as VAS hereinafter).

The VAS 140 operates as a client process for the control services andoperates as a server process for the applications. The VAS 140 obtainsapplication information before performing install process, in which theinstall process is performed for making an application launchable in thecompound machine. Then, the VAS 140 produces an application informationfile in the hard disk 200. As an example of the information that isobtained is product information. The product information includes aproduct ID, a vendor name, an application name, a version, a contactaddress (telephone number), required resources, determination oninstall, and related application information. The product informationcan be included in an execution file of the application, or can beobtained by reading a file via a network for example. In addition, whenthe product information has been stored in the hard disk 200, a NVRAM104, an application information table 106 or the like, the productinformation can be obtained by reading one of them.

The application information included in the application execution filecan be obtained by the VAS 140 by provisionally launching theapplication to enable interprocess communication between the VAS 140 andthe application.

By provisionally lunching the application, the application informationin the execution file of the application can be obtained by the VAS 140by using interprocess communication between the VAS 140 and theapplication.

The application is copied to the hard disk from a PC card, IC card, SDcard and the like, for example. Then, install process is performed forthe application, in which the application is set to be launchable. Inthe present embodiment, before performing the install process, the VASobtains the application information that relates to the application, sothat the VAS can determine whether the application can be installed ornot in the compound machine. Whether the application can be installed ornot is determined according to whether the application causes thecompound machine to operate unstably or to stop its operation due tolack of resources or inconsistency of versions or the like. The reasonfor performing the check of the application before installing theapplication is that it is meaningless to install an application thatcannot be launched, and that, the application may adversely affect theoperation of the compound machine if the application is erroneouslylaunched.

The platform 120 includes control services for interpreting a processrequest from an application and issuing an acquiring request forhardware resources, a system resource manager (SRM) 123 for managing oneor more hardware resources and arbitrating the acquiring requests fromthe control services, and a general-purpose OS 121.

The control services include a plurality of service modules, which are asystem control service (SCS) 122, an engine control service (ECS) 124, amemory control service (MCS) 125, an operation panel control service(OCS) 126, a fax control service (FCS) 127, a network control service(NCS) 128. In addition, the platform 120 has application programinterfaces (API) that can receive process requests from the applications130 by using predetermined functions.

The general purpose OS 121 is a general purpose operating system such asUNIX, and can execute each piece of software of the platform 120 and theapplications 130 concurrently as a process.

The process of the SRM 123 is for performing control of the system andfor performing management of resources with the SCS 122. The process ofthe SRM 123 performs arbitration and execution control for requests fromthe upper layer that uses hardware resources including engines such asthe scanner part and the printer part, a memory, a HDD file, host I/Os(Centronics I/F, network I/F IEEE1394 I/F, RS232C I/F and the like).

More specifically, the SRM 123 determines whether the requested hardwareresource is available (whether it is not used by another request), and,when the requested hardware resource is available, notifies the upperlayer that the requested hardware resource is available. In addition,the SRM 123 performs scheduling for using hardware resources for therequests from the upper layer, and directly performs processescorresponding to the requests (for example, paper transfer and imageforming by a printer engine, allocating memory area, file generation andthe like).

The process of the SCS 122 performs application management, control ofthe operation part, display of system screen, LED display, resourcemanagement, and interrupt application control.

The process of the ECS 124 controls engines of hardware resourcesincluding the white and black laser printer (B&W LP) 101, the colorlaser printer (Color LP) 102, the scanner, and the facsimile and thelike. The process of the MCS 125 obtains and releases an area of theimage memory, uses the hard disk apparatus (HDD), and compresses andexpands image data.

The process of the FCS 127 provides APIs for sending and receiving offacsimile from each application layer by using PSTN/ISDN network,registering/referring of various kinds of facsimile data managed by BKM(backup SRAM), facsimile reading, facsimile receiving and printing, andmixed sending and receiving.

The NCS 128 is a process for providing services commonly used forapplications that need network I/O. The NCS 128 distributes datareceived from the network by a protocol to a corresponding application,and acts as mediation between the application and the network whensending data to the network. More specifically, the process of the NCS128 includes server daemon such as ftpd, httpd, lpd, snmpd, telnetd,smtpd, and client function of the protocols.

The process of the OCS 126 controls an operation panel that is a meansfor transferring information between the operator (user) and controlparts of the machine. In the compound machine 100 of the embodiment, theOCS 126 includes an OCS process part and an OCS function library part.The OCS process part obtains an key event, which indicates that the keyis pushed, from the operation panel, and sends a key event functioncorresponding to the key event to the SCS 122. The OCS function libraryregisters drawing functions and other functions for controlling theoperation panel, in which the drawing functions are used for outputtingvarious images on the operation panel on the basis of a request from anapplication or from the control service. The OCS function library isdynamically linked to the application and each module of the controlservices. All of the OCS 126 can be configured as a process, or can beconfigured as an OCS library.

The application 130 includes a printer application 111 that is anapplication for a printer having page description language (PDL) and PCLand post script (PS), a copy application 112, a fax application 113, ascanner application 114 that is an application for a scanner, a networkfile application 115, a process check application 116 and the newapplications 117 and 118. These applications are applications specificfor the compound machine 100. When the application is launched, theapplication sends an application registration request message with theprocess ID to the VAS 140. Then, the VAS 140 performs registrationprocess for the application.

Interprocess communication is performed between a process of theapplication 130 and a process of the control service, in which afunction is called, a returned value is sent, and a message is sent andreceived. By using the interprocess communication, user services forimage forming processes such as copying, printing, scanning, and sendingfacsimile are realized.

As mentioned above, the compound machine 100 of the first embodimentincludes a plurality of applications 130 and a plurality of controlservices, and each of those operates as a process. In each process, oneor more threads are generated and the threads are executed in parallel.The control services provide common services to the applications 130.User services on image formation such as copying, printing, scanning andsending facsimile are provided while the processes are executed inparallel, the threads are executed in parallel, and interprocesscommunication is performed. A third party vendor can developapplications for the compound machine 100, and can executes theapplication in an application layer on the control service layer in thecompound machine 100. The new applications 117 and 118 shown in FIG. 1are the examples. The new application can be added or deleted one byone.

FIG. 2 shows an example of a hardware configuration of the compoundmachine 100.

The compound machine 100 includes a controller 160, an operation panel175, a fax control unit (FCU) 176, and an engine part 177 that ishardware resource such as a printer that is specific for image formingprocessing. The controller 160 includes CPU 161, a system memory 162, anorth bridge (NB) 163, a south bridge (SB) 164, ASIC 166, a local memory167, HDD 168, a network interface card (NIC) 169, a SD card slot 170, aUSB device 171, an IEEE1394 device 172, and a Centronics 173. Thememories 162, 167 may includes RAMs and/or ROMs, for example. The FCU176 and the engine part 177 are connected to the ASIC 166 in thecontroller via a PCI bus 178. The CPU 161 executes programs of theapplication and control services and the like installed in the compoundmachine 100 by reading data from a RAM.

FIG. 3 is a block diagram showing the configuration of the VAS 140, andrelationship among the VAS 140, each application, the control servicelayer 150 and the general OS 121.

The process of the VAS 140 includes a dispatcher 145, a control thread144 and an application information obtaining thread 141, and a screendisplay thread 142 and an application check thread 143. The screendisplay thread 142 produces an operation screen on the operation panel.The application check thread 143 checks whether the application can beinstalled according to the obtained application information.

The dispatcher 145 monitors message receiving from the application 130or from control services. The dispatcher 145 sends a process request tothe control thread 144, the application information obtaining thread141, the screen display thread 142 and the application check thread 143according to the received message.

The control thread 144 requests the threads 141-143 to performapplication information obtaining process, screen display process, andapplication check process. In the application check process, the VASchecks whether the application adversely affects the compound machine100 if the application is launched. For example, the VAS 140 obtainsapplication information of an application for which install is requestedand obtains application information of applications that have alreadybeen installed. Then, the VAS can check resources or versions of theapplications to check whether the application may adversely affect thecompound machine. At that time, the screen display thread 142 displaysapplication information of the application on the operation panel 105 byusing application information stored in the application information filein the hard disk 200. Therefore, the user can grasp status of theapplication to be installed. Thus, even when an application is notdetermined to be installable, the user can understand the reason of thedetermination.

In addition, the control thread 143 controls install process anduninstall process, in which the install process is performed when theapplication is determined to be installable, and the uninstall processis performed when the application becomes unnecessary.

When the application information obtaining thread 141 receives a processrequest from the control thread 143, the application informationobtaining thread 141 provisionally launches an application that is notinstalled so as to enable interprocess communication between the VAS andthe application, and obtains application information from theapplication. As to an application that is installed, by launching theapplication, the application information can be obtained by interprocesscommunication. The obtained application information is stored in thehard disk 200 as the application information file 201. The applicationinformation is recorded as a record for each application.

The program of the VAS 140 can be provided as a part or a whole of SDK(Software Development Kit). The program is provided as an executablefile or an installable file in an recording medium such as a CD-ROM or aFD. In addition, the program file of the VAS 140 can be provided via anetwork.

FIG. 4 shows relationship between the VAS 140, and the hard disk 200that stores application information, the application information table106, and the NVRAM 104. As shown in FIG. 4, the product informationstored in the hard disk 200 is managed for each application. Byspecifying a product ID, application information corresponding to theproduct ID can be specified. In addition, the hard disk 200 stores dataof applications A and C that are copied in the compound machine 100. Theapplication B is installed from an IC card. “F” that is indicated bydotted lines indicates an execution file group existing in a path.

NVRAM 104 is a non-volatile memory that keeps memory content even whenthe power is turned off. The NVRAM 104 stores the product ID, launchinformation, additional information for each application. Wheninstalling an application, information on the application is recorded inthe NVRAM 104. In addition, the launch information indicates whether thecorresponding application is to be launched when the power of thecompound machine is turned on.

The application information table stores information on applications astable data. By specifying the product ID of the application A, theapplication name, the version and the install attribute can be obtainedfrom the table, and the information can be displayed on the operationpanel.

FIG. 5 shows a whole procedure for performing install process oruninstall process in the compound machine 100. FIG. 6 is a flowchartshowing a subroutine of application information obtaining process instep S401 in FIG. 5.

In step S401 in FIG. 5, the dispatcher 145 requests the applicationinformation obtaining thread 141 to obtain application information of anapplication via the control thread 144. The application informationobtaining thread 141 generates the application information file 201 byperforming application information obtaining process shown in FIG. 6.

Then, the control thread 144 reads application information from theapplication information file 201, and produces an operation screen todisplay the operation screen on the operation panel in step S402. Thedisplay screen displays the application name, the version, resourceinformation and the like for each application. In addition, the displayscreen shows whether the application can be installed or not. Bydisplaying the screen, the user can understand status of applications,and the user can selects items in the screen to proceed install process.

After the user selects some items, the compound machine 100 waits foruser input in step S403, and determines presence or absence of a userrequest in step S404. The user request is an install request of anapplication or uninstall request of an application. If install of anapplication is requested and the request is permitted, information isregistered to the NVRAM 104 shown in FIG. 4 in step S405. If the requestis for uninstalling the application, application information is deletedfrom the NVRAM 104 shown in FIG. 4 in step S406.

FIG. 6 is a flowchart showing the operation for obtaining theapplication information. Since the application information can not beobtained if the application is not launched, the VAS 140 provisionallylaunches the application in step S501. Then, the VAS 140 can obtainapplication information by requesting desired information from theapplication by using interprocess communication. According to thepresent embodiment, the VAS 140 obtains the product ID in step S502, andrefers to the NVRAM 104, so that the VAS 140 can determine whether theapplication is already registered or not in step S503.

If the application is not registered in the NVRAM 104, the VAS 140determines whether there is the product information file in step S504.If there is not the product information file, the VAS 140 obtainsapplication information by using interprocess communication from theapplication in step S505. Then, the product information file is producedin step S506, and the VAS 140 determines whether the application can beinstalled or not in step S507. The VAS 140 reflects the determinationresult to the product information in step S508. For example, Thedetermination is performed by comparing resource information, obtainedfrom the application, to be used by the application with availableresource information of the system of the compound machine.

In step S509, on the basis of the determination result, it is determinedthat the application can be installed or not. When there is the productinformation file in the step S504, the application information isobtained from the product information file in step S510. Afterinformation used for determining whether an application is installableis obtained in step S511, it is determined whether the application isinstallable in step S509.

If the application is installable in step S509, an installable flag isset in step S512, and the flag is written into the applicationinformation table in step S516. When the application is not installable,not-installable flag is set in step S513 and the flag is written intothe application information table in step S516. If the productinformation is already registered in the NVRAM 104 in step S503, theapplication information is obtained from the NVRAM 104 in step S514, andinstalled flag is set in step S515 and the flag is written into theapplication information table in step S516.

If the above-mentioned process is not completed for every application,the step returns to the step S501, and the above-mentioned process isrepeated.

According to the compound machine of this embodiment, since theapplication information is obtained for all applications, the status ofapplications can be grasped.

Next, the provisional launch of the application will be described. Theprovisional launch is different from normal launch of the application inwhich substantive resources of the compound machine is used (launch forcausing functions intended by the application is called “normallaunch”). In the provisional launch, the application does not obtainresources such as memory areas that are required when the applicationnormally operates. In the provisional launch, the application onlyperform interprocess communication with the VAS 140, in which theapplication provides, to the VAS, information on the application. Theprocess of the provisionally launched application ends whencommunication between the application and the VAS ends. In addition, thefunction of the provisional launch of the application is independent ofnormal functions of the application, and is common to applications forthe compound machines of the present embodiment. Therefore, for example,by providing a program template including the function of theprovisional launch to a vendor, the vendor can easily develop anapplication applicable for the compound machine by using the programtemplate. For including application information in the application, forexample, the vendor makes an include file in which the applicationinformation is included, and includes the include file into theapplication when compiling the application program.

By providing the provisional launch function to the application, theapplication can provide application information to the VAS 140 withoutnormal launch, so that the VAS 140 can check the application.

FIG. 7 shows an example of a program description (main function) of anapplication including the provisional launch function. This descriptioncan be provided as the program template. As shown in FIG. 7, whether theapplication is provisionally launched or normally launched is determinedby an argument (−v). Accordingly, one of normal launch and provisionallaunch can be easily selected when the VAS 140 launches the application.That is, when provisional launch is selected by using argument (−v), theapplication is provisionally launched so that application information isnotified. If provisional launch is not selected, the application isnormally launched so that intrinsic operation of the application can beperformed.

The VAS 140 obtains information from the application and determineswhether the application is installable in this embodiment. Instead ofthis procedure, a procedure shown in FIG. 8 can be adopted. In theprocedure shown in FIG. 8, after the VAS 140 determines that theapplication is installable, the VAS 140 asks the application whether theapplication is actually installable in step S601. If the applicationnotifies the VAS 140 that the application is installable in step S602,the VAS 140 performs the install process for the application in stepS603.

Between the step S601 and the step S602, the application may obtainssystem information (resource data or configuration data) from the VAS140, and the application may determines whether the application itselfis installable according to the system information.

In this embodiment, the VAS 140 obtains the application information fromthe execution file of the application. Instead of this method, forexample, the VAS 140 also can obtain the application information from afile that includes the application information. By storing the file in aserver, the VAS 140 can obtain the application information via anetwork.

In addition, displaying the screen on the operation panel and checkingapplications can be respectively performed by a program other than theVAS 140.

Second Embodiment

In this embodiment, examples of screens displayed by the screen displaythread 142 can be described in more detail.

FIGS. 9-36 show state transition of operation screens displayed on theoperation panel 105. FIG. 9 shows an authentication screen of an initialsetting screen. FIGS. 10-16 show screens for file copy operations. FIGS.17-28 show screens for install operations. FIGS. 29-36 shows screens foruninstall operations.

In the authentication screen shown in FIG. 9, a user ID and a passwordare input. After input them and the OK button 210 is pushed, a desiredmode can be selected. In this embodiment, an application is copied inthe compound machine 100 before installing the application. As shown inFIG. 10A, a file copy screen is displayed, and a storing destination ofa file to be copied is selected. In this embodiment, a destination canbe selected among from memory card 211, SD card 212 and via-network 213.As sown in FIG. 10B, when via-network 213 is selected and the OK button216 is pushed, a download screen shown in FIG. 11A or a copy screenshown in FIG. 11B is displayed. The download screen is for downloadingan application by using Web. The copy screen is for copying anapplication by using LAN network. When cancel button 215 is pushed inFIG. 10B, the screen is returned to FIG. 10A. When the EXIT button 214is pushed, the screen is returned to FIG. 9 in which the authenticationscreen is not shown.

FIG. 12A shows a case in which the memory card 211 is selected. FIG. 12Bshows a case in which the SD card 212 is selected. When the OK button ispushed, the screen is changed to FIG. 13A in which a file list producewaiting screen is displayed. When the CANCEL button 221 is pushed, thescreen is returned to FIG. 10A. FIG. 13B shows the file list 222.

FIG. 14A shows a screen in which SimpleCopy 225 is selected from thefile list. FIG. 14B shows a screen in which SimplePrint 223 is selectedadditionally. When the OK button 216 is pushed in FIG. 14A, the screenis changed to a waiting screen shown in FIG. 15A. If there is the samefile, a warning screen shown in FIG. 15B is displayed in whichconfirmation for overwriting is displayed. When copying of the fileends, a screen shown in FIG. 16 is displayed. At this time, copying ofthe application into the compound machine is completed.

FIG. 17 shows an example of an install operation screen. When an installtag is selected, the before-mentioned application information isobtained.

FIG. 17A shows information such as “registration allowed”, “registrationnot allowed”, and “registered”. The “registered” means that theapplication information is recorded in the NVRAM by performing installprocess. When the VAS 140 refers to the NVRAM, the VAS 140 can determinewhether the application is already registered or not.

The “registration not allowed” is shown when the VAS 140 determines thatthe application can not be installed in the compound machine 100 forsome reason. For example, when a resource to be used by the applicationis not provided on the compound machine 100, the application isdetermined to be not-installable.

The “not registered (registration allowed)” means that the installprocess is not yet performed although the application is installable.

As shown in FIG. 17B, when SimpleCopy 235 that is an installableapplication is specified, the field of the application blinks. On theother hand, as shown in FIG. 19A, when a registration-not-allowedapplication 234 is specified, the screen is changed to FIG. 19B, andinformation indicating the application cannot be installed and thereason are displayed. Information used for displaying this message wasstored in the compound machine when the VAS 140 obtained applicationinformation.

In the screen shown in FIG. 17A, when an application is selected forinstall, a medium that is an origination (a medium in which theapplication is copied) and a medium that is a destination in which theapplication exists after it is installed may be displayed as shown inFIG. 18. In this case, the destination can be selected. For example, asshown in FIG. 18, an application copied in the SD card can be installedin the SD card.

When an installed application is selected, the screen changes from FIG.20A to FIG. 20B, and a warning screen is displayed. When an installableapplication is selected, after a registration waiting screen 240 shownin FIG. 21A is displayed, a registration end screen shown in FIG. 21B isdisplayed. Then, application registration (application install) ends. Asa result, as shown in FIG. 22, the number of installed applicationsincreases.

FIG. 23A shows another example in which installed applications andnot-installable applications are shown. From the state of FIG. 23B, whennothing is selected, the screen is returned to FIG. 23A. As shown inFIG. 24A, a plurality of applications can be selected as applications tobe installed. As shown in FIG. 24B, even if an application is selected,the selection can be canceled.

As shown in FIG. 25A, when a not-installable application is selected, awarning screen is displayed as shown in FIG. 25B. As shown in FIG. 26A,when an installed application is selected, a warning screen shown inFIG. 26B is shown, in which a warning indicating that setting valueswould be initialized is shown. As shown in FIG. 27A, while theapplication is being registered, the screen is changed to a waitingscreen. Then, an completion result is shown in FIG. 27B. Then, as shownin FIG. 28, application names that are installed are shown.

As to uninstall process, the screen shown in FIG. 29A is shown. FIG. 29Bshows a screen in which an application to be uninstalled is selected.When an application for which uninstall is not allowed is selected,warning screens shown in FIGS. 30A-30B are shown. When uninstall isallowed, FIGS. 31A and 31B are shown, and uninstall result is shown asshown in FIG. 32.

FIGS. 33 and 34 are examples of uninstall screens when a key is alreadyassigned to the application. As shown in FIG. 34A, when SimpleScan isselected, a screen shown in FIG. 34B is shown in which whether keyassignment is released and the application is uninstalled is inquired.When OK is pushed, the screens shown in FIGS. 35A and 35B are shown, anduninstall result is shown in FIG. 36.

As mentioned above, according to the compound machine 100 of thisembodiment, copy process, install process and uninstall process can beeasily operated by using the operation screens shown in FIGS. 9-36.Since various pieces of application information are shown on theoperation panel, the user can select screens sequentially according todisplayed application information. As a result, easy operation can berealized.

In the examples shown in FIGS. 9-36, the compound machine 100 determineswhether an application is installable, and the determination result isshown on the operation panel. However, the compound machine 100 can bealso configured such that the compound machine 100 simply displaysinformation necessary for determining whether an application isinstallable so that the user performs the determination. In this case,for example, version information of APIs used in the application andversion information of APIs actually used in the compound machine may bedisplayed. In addition, a resource amount to be used by the applicationand an available resource amount that actually can be used in thecompound machine may be displayed such that they can be compared.

The above-mentioned series of screens can be displayed on an apparatussuch as a PC connected to the compound machine via network, and installprocess and the like can be performed from the apparatus.

In the case, the net file application 115 shown in FIG. 1 has a Webserver capability. A Java program that is a part of the net fileapplication 115 generates a series of the screens and performs installprocess and the like for the compound machine 100 by using the so-called“servlet” method. The PC include a Web browser.

The configuration of the net file application 115 is sown in FIG. 37. Asshown in FIG. 37, the net file application 115 includes a Web server1151, a JVM (Java virtual machine) 1152 and a Java program 1153. The netfile application 115 receives a request from the PC. Then, the net fileapplication 115 performs the install process and generates a HTML fileand returns the HTML file to the PC.

The screen can be displayed on the PC simultaneously with displaying thesame screen on the operation panel of the compound machine, or thescreen can be displayed only on the PC. When the screen is displayed onthe PC simultaneously with displaying the same screen on the operationpanel, for example, the net file application 115 obtains drawinginformation from the OCS, and converts the drawing information into HTMLand sends the HTML.

Third Embodiment

In the following, the third embodiment of the present invention will bedescribed. The functional configuration of the compound machine 100 ofthe third embodiment is the same as that of the first embodiment. Thatis, the functional configuration of the compound machine 100 of thethird embodiment is shown in FIG. 1.

As to a general personal computer, if a plurality of applications arelaunched one by one, there is a possibility that the PC hangs due tolack of resources. On the other hand, as to the compound machine 100 ofthe present invention, the preinstalled applications such as the copyapplication do not hang.

However, since the compound machine 100 can install a new applicationdeveloped by a third vendor or a user, there may be a case in which lackof resource occurs when launch setting is performed for a newapplication if a plurality of applications are already set to belaunched.

The “launch setting” is performed for setting an installed applicationto be launched when the compound machine 100 is powered on. That is, inthe compound machine 100 of this embodiment, the application is notlaunched only by installing the application. It is necessary to performlaunch setting on the application for launching the application. Byperforming the launch setting, information indicating that theapplication is to be launched is stored in a memory. Then, when thecompound machine 100 is powered on, the information is referred to sothat the application is launched.

The VAS 140 obtains information on resources to be used by theapplication (also referred to as necessary resource information) fromthe application, and generates a resource use information file by usingthe information in the hard disk (HD 200). A text memory area size, aheap area size and a stack area size are examples of the information onresources to be used. The text memory area is a memory area in whichprograms of each application are loaded. The heap area is a memory areain which each application dynamically keeps. The stack area is an areathat is kept for storing arguments that are used for calling externalmodules by each application.

The information on the necessary resource amount is included in theexecution file of the application when developing the application. Then,the VAS 140 provisionally launches the application so as to obtain theinformation by using interprocess communication.

In addition, by storing the information on resources to be used by theapplication in a file, the VAS 140 can obtain the necessary resourceinformation by referring to the file.

Further, if the application has been actually executed on the compoundmachine 100, the VAS 140 can obtain the necessary resource amount byobtaining the resource usage records of the application.

The VAS 140 also obtains an available resource amount in the compoundmachine 100 by subtracting resource amounts already used by applicationsand system programs from the whole resource amount of the compoundmachine 100. As the resource amounts already used by applications andsystem programs, usage records that are recorded in the compound machinecan be used. The resource amounts already used by applications andsystem programs can be recorded in the resource use information file,and the VAS 140 can refer to them.

At the time when the launch setting is performed for an application, theVAS 140 compares the necessary resource amount for the application andthe available resource amount. When the resource amount lacks in thecompound machine, launch is restricted, that is, launch setting is notperformed for the application. In addition to that, if the applicationhas a limited execution mode, the VAS 140 may set the application to runby the limited execution mode, in which the limited execution mode is amode in which, for example, if the memory area is not enough, theapplication runs by using the hard disk area instead of the memory area.

The resource check and the launch restriction can be performed not onlywhen the launch setting is performed but also when the application isjust actually launched.

FIG. 38 is a block diagram showing the configuration of the VAS 140 ofthis embodiment, and the relationship among the VAS 140, theapplications, the control service layer 150 and the general OS 121.

In the process of the VAS 140, a dispatcher 144, a control thread 143, aresource use information obtaining thread 1141, and an applicationlaunch restriction thread 1142 operate.

The dispatcher 144 monitors message receiving from the application orthe control services, and sends a process request accordion to themessage.

In a situation in which an application is actually launched, when thedispatcher 144 receives an application launch request message from thecontrol service, the dispatcher 144 sends the received applicationlaunch request message to the control thread 143. The control thread 143sends a process request to the resource use information obtaining thread1141 and the application launch restriction thread 1142.

In a situation in which launch setting is performed, for example, thedispatcher 144 sends a process request message to the control thread143, and the control thread 143 sends a process request to the resourceuse information obtaining thread 1141 and the application launchrestriction thread 1142.

The control thread 143 can determine whether resource use information isrecorded for an application that is installed by referring to theresource use information file 1201.

Then, the control thread 143 obtains the resource use information fromthe resource use information obtaining thread, and sends the resourceuse information to the application launch restriction thread 1142. Theapplication launch restriction thread 1142 may refer to the resource useinformation file 1201. The application launch restriction thread 1142compares the available resource amount and the necessary resourceamount. If the necessary resource amount is larger than the availableresource amount, the application launch restriction thread 1142 performslaunch restriction process.

When the resource use information obtaining thread 1141 receives aprocess request from the control thread 143, the resource useinformation obtaining thread 1141 refers to a proc structure (or u area212) of the general OS 121 to obtain the text memory area size, heaparea size and the stack area size used by an application. Then, theresource use information obtaining thread 1141 produces the resource useinformation file 1201 in the hard disk (HD) 200. The resource useinformation is recorded for each application as a record. Instead ofthis, as mentioned before, the resource use information obtaining thread1141 may obtain necessary resource information from the application thatis included in the execution file of the application, and record theresource information in the resource use information file 1201.

In addition, the resource use information obtaining thread 1141 canobtain resource amounts that are used by current processes from the procstructure 211, in which the currently used resource amounts are used forcalculating the available resource amount.

Instead of performing the above-mentioned processing by using thethreads, the VAS 140 may be configured as one process.

FIG. 39 shows an example of the resource use information file 1201stored in the HDD 200. As shown in FIG. 39, the resource use informationfile 1201 stores the text memory area size, heap area size and the stackarea size for each application ID (also referred to as product ID).

This file may store configuration data of the compound machine 100, forexample, ADF. By doing so, launch restriction can be performed accordingto the configuration data. For example, if the compound machine 100 doesnot have the ADF, launch of an application that uses the ADF may berestricted.

FIG. 40 shows an example of the proc structure 211 that is referred toby the resource use information obtaining thread 1141. As shown in FIG.40, the proc structure 211 includes process ID (p_pid), text memory areasize, heap memory area size and stack area size for each process. Theproc structure is updated by the general OS when a process is executed,when a process ends, and when the status of the process changes.

In addition, the resource use information obtaining thread 1141 obtainsresource amounts used by applications and system programs that arealready set to be launched from the proc structure 211, and calculatesthe available resource amount by subtracting the currently used resourceamounts from the whole resource amount of the compound machine.

When the application launch restriction thread 1142 receives a launchrequest for a new application or receives a launch setting request, theapplication launch restriction thread 1142 refers to the resource useinformation file 1201, and obtains information on resources to be usedby the new application. In addition, the application launch restrictionthread 1142 obtains the available resource amount, for example, from theresource use information obtaining thread 1141. Then, the applicationlaunch restriction thread 1142 compares them and determines whetherlaunch of the new application needs to be restricted.

In a case of launch setting, when the application launch restrictionthread 1142 determines that application launch restriction is necessary,the application launch restriction thread 1142 displays anafter-mentioned warning screen.

In a case of actual launching, when the application launch restrictionthread 1142 determines that application launch restriction is necessary,the application launch restriction thread 1142 sends a launchrestriction request message to an application that sent the applicationlaunch request. When the application launch restriction thread 1142determines that application launch restriction is not necessary, theapplication launch restriction thread 1142 sends a launch requestmessage to the application so that normal launch process is performed.

FIG. 41 shows a figure of a screen displayed on the operation panel inwhich launch restriction levels are shown by using a histogram. Thisscreen is displayed when launch setting is performed. The histogramshown in FIG. 41 indicates the available resource amount that isobtained by subtracting resources used by applications and systemprograms that are preinstalled in the compound machine from the wholeresource amount. That is, the figure visually shows how to divideremaining resources among new applications. By using the screen, theuser can visually determine how to divide remaining resources among newapplications. The histogram shows a resource amount to be used by a userapplication 221 that is set to be launched first, and resource amount tobe used by a user application 222 that is set to be launched secondly.As for a user application 223 for which launch setting has not beenperformed, predicted resource amount is shown. In the example of FIG.41, if launch setting is performed for the user application 223, theresource amounts reach a dangerous level. Thus, launch setting can notbe performed for the user application 223. In the screen, the launchrestriction levels are shown by using colors, for example, safe (blue),warning (yellow) and danger (red). In addition, at the position of thedangerous level, the histogram may blink, or a voice guidance or warningsound may be output.

Examples of screens displayed on the operation panel will be shown inthe following. Each screen is displayed by the VAS 140, for example.

FIG. 42 shows a launch setting screen in which launch setting has beenperformed for “simple scanner” and “simple copy”. As shown in thefigure, memory amounts to be used by the “simple scanner” and “simplecopy” are shown in the histogram 251.

Next, when “simple print” is selected for performing launch setting asshown in FIG. 43, the part of “simple print” blinks for a second. Then,the value of the histogram becomes 100% and the histogram blinks.

After that, screens shown in FIGS. 44 and 45 are displayed. FIG. 44 is ascreen for advising to select another application. By pushing the OKbutton, the screen returns to FIG. 42. FIG. 45 is an example of a screenin which launch setting can be performed even if enough memory is notincluded in the compound machine. When an application for which any keyis not assigned is selected, a screen shown in FIG. 46 is displayed.

In the screen of FIG. 42, when “simple scanner” is selected and whenlaunch setting ends, a screen shown in FIG. 48 is displayed after thescreen of FIG. 47. As shown in FIG. 48, the value of the histogram isincreased by the memory amount to be used by the “simple scanner”.

When releasing launch setting for an application, screens shown in FIGS.49-53 are displayed. In the state of FIG. 49, when “simple scanner” isselected for releasing launch setting, “simple scanner” blinks as shownin FIG. 50. If OK is pushed, a screen shown in FIG. 51 is displayed.Then, if OK is pushed, a screen of FIG. 53 is shown via FIG. 52. Asshown in FIG. 53, a memory amount of the simple scanner is decreasedfrom the histogram.

The application launch restriction process performed by the VAS 140 ofthe compound machine 100 will be described with reference to a flowchartof FIG. 54. FIG. 54 shows a procedure performed by the VAS 140 whenperforming launch setting.

When the VAS 140 receives a launch setting request for an application instep S1601, the VAS 140 checks whether there is resource use informationfor the application by referring to the HD 200 in step S1602.

When the resource use information file exists, the VAS 140 obtains theresource use information from the resource use information file 1201 instep S1603. If the resource use information file does not exist in stepS1602, the VAS 140 produces the resource use information file in stepS1604. For example, the control thread 143 requests the resource useinformation obtaining thread 1141 to produce the resource useinformation file, so that the resource use information obtaining thread1141 produces the resource use information file.

The procedure for producing the resource use information file will bedescribed later with reference to FIG. 56.

Next, the VAS 140 obtains the available resource amount in step S1605.For calculating the available resource amount, resource amounts ofapplications for which launch setting has already been performed can beobtained from the proc structure by using a system call or a servicefunction call. The system call is provided by the general OS, and theservice function is provided by the control service layer 150. Inaddition, if the resource amounts are included in the resource useinformation file 1201, the resource amounts can be also obtained fromthe resource use information file 1201.

Next, the VAS 140 compares the necessary resource amount to be used bythe application for which launch setting is requested with the availableresource amount in step S1606. The application launch restriction thread1142 determines whether the necessary resource amount is larger than theavailable resource amount in step S1607. If the necessary resourceamount is larger than the available resource amount, a screen shown inFIG. 44 is displayed in step S608. If the necessary resource amount isnot larger than the available resource amount, launch setting isnormally performed in step S1609.

If the application has a mode in which the application runs by using ahard disk area instead of a memory area, a screen for asking the userwhether to use the mode can be displayed. When the user selects themode, the application is executed by using the mode. The VAS 140 canknow that the application has the mode by referring to the applicationinformation.

FIG. 55 is a flowchart for performing launch restriction process when anapplication is launched.

When the dispatcher 144 receives an application launch request messagefrom the control service layer, the dispatcher 144 send the message witha process ID to the control thread 1143. The control thread 143determines whether the application that is requested to launch is anapplication other than the preinstalled applications such as the copyapplication, that is, whether the application that is requested tolaunch is a new application in step S1701. If the application is the newapplication in step S1702, the control thread 143 checks whether thereis resource use information for the application by referring to the HD200 in step S1703.

When the resource use information file exists for the application, thecontrol thread 143 obtains the resource use information from theresource use information file 1201, and sends the resource useinformation to the application launch restriction thread 1142 in stepS1704. If the resource use information file does not exist in stepS1703, the control thread 143 requests the resource use informationobtaining thread 1141 to produce the resource use information file, sothat the resource use information obtaining thread 1141 produces theresource use information file 1201 for the new application in stepS1705. After the file is produced, the step S1704 is performed.

Next, the VAS 140 obtains the available resource amount in step S1706.

Next, the VAS 140 compares the necessary resource amount to be used bythe new application for which launch is requested with the availableresource amount in step S1707. The application launch restriction thread1142 determines whether the necessary resource amount is larger than theavailable resource amount in step S1708. If the necessary resourceamount is larger than the available resource amount, a screen of warningis displayed in step S1709. If the application has the mode in which theapplication runs by using a hard disk area instead of a memory area, ascreen for asking the user whether to use the mode can be displayed.When the user selects the mode, the application may be executed by usingthe mode.

If the necessary resource amount is not larger than the availableresource amount, the new application is normally launched in step S1710.

FIG. 56 shows a flowchart for explaining the operation of the VAS 140when the resource use information file is produced.

First, the VAS 140 provisionally launches applications from which theVAS 140 wants to obtain resource information in step S1801. Then, theVAS 140 obtains resource information from the application by usinginterprocess communication in step S1802. Then, the VAS 140 produces theresource use information file 1201 by using the obtained resourceinformation in step S1803. FIG. 39 is an example of the resource useinformation file in which text memory area size, heap area size andstack area size are recorded for each application ID.

If the application has been launched and the actual record of resourceusage of the application is stored in the proc structure 211, the VAS140 can obtain the usage record instead of obtaining information fromthe application. By updating the resource use information file by usingthe actual records, updated resource information can always be obtained,that is, learning capability is provided. If the actual usage recordchanges each time when obtaining the record, the mean value or themaximum value of the records can be used as recourse information to berecorded in the resource use information file 1201.

In the case in which the resource use information file 1201 is producedby using the proc structure 211 in the RAM 210, when the resource useinformation obtaining thread 1141 receives the process ID, the productID and the resource use information obtaining request message from thecontrol thread 143, the resource use information obtaining thread 1141refers to the proc structure 211, and searches for a position of a blockof the process ID of the application ID. Then, the resource useinformation obtaining thread 1141 obtains the resource use informationfrom the block of the process ID, and records the obtained informationin the resource use information file 1201 with the application ID.

According to the compound machine of this embodiment, it can beprevented that the compound machine operates unstably due to lack ofresources. In addition, the new applications developed by the user orthe third vendor can be executed safely.

In this embodiment, the VAS 140 performs the resource use informationobtaining process and the application launch restriction process for allapplications 130. However, the VAS 140 can be also configured so as tocover a part of applications. For example, the VAS 140 may perform theresource use information obtaining process and the application launchrestriction process only for the new applications 117 and 118.

In addition, considering that the resource use amount of the newapplication may change, the VAS 140 may perform launch restriction onthe new application even when the necessary resource amount is smallerthan the available resource to some extent.

Fourth Embodiment

The compound machine 100 of the third embodiment includes one VAS forall applications. According to the compound machine of the fourthembodiment, a plurality of VASes are launched for each application inwhich each VAS performs the resource use information obtaining processand the application launch restriction process for a correspondingapplication.

FIG. 57 is a block diagram of the compound machine of the fourthembodiment. As shown in FIG. 57, the compound machine 800 is differentfrom the compound machine 100 of the third embodiment in that aplurality of virtual application services 841-848 operate for eachapplication.

The VASes 841-848 performs the resource use information obtainingprocess and the application launch restriction process for acorresponding application for the printer application 111, copyapplication 112, fax application 113, the scanner application 114, thenet file application 115 and the process check application 116 and thenew applications 117 and 118.

FIG. 58 is a figure showing a configuration of the VAS 841-848 of thecompound machine 800 of the fourth embodiment, and relationship amongthe VAS 841-848, each application, control service layer 150 and generalOS 121.

According to the compound machine 800 of the fourth embodiment,different from the compound machine 100 of the third embodiment, asshown in FIG. 58, a VAS control process (daemon) 801 operates betweenthe VASes and each application. The VAS control process 801 generatesthe VASes 841-848 for each corresponding application. The operation ofthe VAS control process 801 is similar to that of the control thread143.

Each process of the VASes 841-848 includes the dispatcher 145 and thethreads 1141 and 1142. The function of each thread of the compoundmachine 800 is the same as that of corresponding thread of the thirdembodiment. According to the fourth embodiment, the processing for eachapplication can be performed in parallel, so that the launch restrictionprocess can be performed efficiently.

According to the third and fourth embodiments, the text memory area, theheap memory area, and the stack memory area are examples, and otherresources can be used for application launch restriction.

Fifth Embodiment

In the following, the fifth embodiment of the present invention will bedescribed. The functional configuration of the compound machine 100 ofthe fifth embodiment is the same as that of the first embodiment. Thatis, the functional configuration of the compound machine 100 of thethird embodiment is shown in FIG. 1.

In this embodiment, the VAS 140 obtains application compatibilityinformation and produces an application compatibility information in anhard disk (after-mentioned HD 200), in which the applicationcompatibility information indicates incompatible applications for eachapplication. As to mutually incompatible applications, exclusive controlis required.

The following example pairs of applications require exclusive control.An example is a pair of applications of the same type such as a pair ofauthentication applications, and a pair of billing applications. Inaddition, each of a pair of printer applications and a pair of displayapplications require exclusive control, since the applications of eachof the pairs may scramble the same device (printer or display part).Further, a pair of the same applications of different versions requiresexclusive control.

In addition, exclusive control is necessary for the following cases.

As a first case, exclusive control is required for an application thatrequires large memory area. The exclusive control is also required foran application that uses very large CPU power.

In addition, exclusive control is necessary for applications thatgenerate RAW files of different formats in order to prevent problems dueto format mismatch.

In addition, as to an authentication or billing application, there areapplications suitable for a specific authentication or billingapplication. For example, in a case in which a scanner application A anda copy application A are suitable for an authentication application A,and a scanner application B and a copy application B are suitable for anauthentication application B, exclusive control is necessary between theauthentication application A and the scanner/copy applications B ifauthentication methods of the authentication applications A and B aredifferent. In addition, exclusive control is necessary between theauthentication application B and the scanner/copy applications A.

In addition, exclusive control is necessary between a log obtainingapplication and a copy application wherein the log obtaining applicationproduces thumbnails of copied images, and the copy applicationinstantaneously deletes image data in the hard disk.

Further, for example, if there is an arrangement that applications ofvendor A and vendor B can not be executed simultaneously in an compoundmachine, exclusive control is necessary.

When the VAS 140 obtains the application compatibility information, theVAS 140 also obtains attribute information of each application. Theattribute information is used, for example, for displaying a screen.

In addition, the VAS 140 obtains the application compatibilityinformation by provisionally launching the application by usinginterprocess communication. The VAS 140 may obtain the applicationcompatibility information from an external server.

When launch setting is performed or when an application is launched, theVAS 140 detects incompatible applications according to the applicationcompatibility information so as to perform launch control. For example,if incompatible applications are detected, one application is launchedand another application is not launched.

FIG. 59 shows the configuration of the VAS 140 of the fifth embodiment,and shows relationship between the VAS 140, each application, thecontrol service layer 150 and the general OS 121.

The process of the VAS 140 includes a control thread 143, an applicationcompatibility information obtaining thread 2141 and an applicationlaunch restriction thread 2142. Processing by the VAS 140 can be alsoperformed without using the threads.

The dispatcher 144 monitors message receiving from an application or acontrol service. The dispatcher 144 sends a process request to thecontrol thread 143, the application compatibility information obtainingthread 2141 and the application launch restriction thread 2142 accordingto the received message. In this embodiment, when the dispatcher 144receives application launch request message for applications, thedispatcher 144 sends the message to the control thread 143. The controlthread 143 sends a process request to the thread 2141 and the thread2142.

Application launch restriction process of this embodiment is executioncontrol process in which only one application in a pair of applicationsis launched and another application is not launched.

When the application compatibility information file 2201 does notinclude application compatibility information for all installedapplications, the control thread 143 can request the thread 2141 toobtain necessary application compatibility information. The obtainedapplication compatibility information is stored in the applicationcompatibility information file 2201.

When the application compatibility information file 2201 includesnecessary application compatibility information, the control thread 143requests the application launch restriction thread 2142 to performapplication launch restriction according to the applicationcompatibility information.

The application compatibility information obtaining thread 2141 obtainsapplication compatibility information by using interprocesscommunication, and stores the information in the applicationcompatibility information file 2201. In addition, if the applicationcompatibility information can be obtained via a network, the applicationcompatibility information obtaining thread 2141 receives necessaryinformation from the network by using the NCS 128. The applicationcompatibility information is recorded as a record for each application.

The application compatibility information file 2201 can be stored in thecompound machine 100 by the user. In addition, when the applicationcompatibility information file 2201 can be downloaded from a server, theVAS 140 can obtain the application compatibility file 2201 from theserver.

Although the above-mentioned operation of each threads is an operationwhen an application is launched, similar operation can be performed whenlaunch setting is performed. Application launch restriction process forthe launch setting is, for example, displaying mutually incompatibleapplications and performing launch setting only for one selectedapplication.

FIG. 60 shows an example of the application compatibility informationfile 2201 stored in the HDD 200. As shown in the figure, the fileincludes, for each application ID (can be referred to as product ID),one or more application IDs that are incompatible with an application.In addition, the HD 200 stores a file shown in FIG. 61. The file shownin FIG. 61 includes, for each application ID, application attribute,operation target, application name (file name), version and the like.The information can be used for displaying a screen, and also can beused for determining which application should be launched amongincompatible applications.

The application launch restriction thread 2142 refers to the applicationcompatibility information file 2201, determines whether there areincompatible applications. If there are incompatible applications, theapplication launch restriction thread 2142 performs execution control inwhich only one application is launched among the incompatibleapplications. In this process, it is necessary to determine whichapplication to launch when execution control is performed. For example,by assigning higher priority to an application having a newer versionfor applications having the same name, an application can beautomatically determined to launch among incompatible applications byusing information shown in FIG. 61. Alternatively, by displaying theincompatible applications on the operation panel, the user can select anapplication.

FIG. 62 shows an example of a user selection screen for applicationsthat can not be launched at the same time. As shown in FIG. 62, thescreen shows a launch requested application list 2211, an incompatibleapplication list 2212 and a radio button 2212 used when user selects anapplication. The user can selects an application by using an operationkey.

When the application launch restriction thread 2142 determines thatapplication launch restriction is necessary, the application launchrestriction thread 2142 sends a launch restriction request message to anapplication that can not be launched. On the other hand, when theapplication launch restriction thread 2142 determines that launchrestriction is not necessary, the thread 2142 sends a launch requestmessage to each application, so that the applications are normallylaunched. In addition, when launch restriction is necessary, a launchrequest message is sent to an application to be launched according tothe exclusive control.

Next, the application launch restriction process by the VAS 140 will bedescribed. FIG. 63 shows a flowchart of the procedure.

When the dispatcher 144 receives an application launch request messagefrom the control service layer 150 in step S2501, the dispatcher 144sends the message to the control thread 143 with a process ID of theapplication. The control thread 143 determines whether launch isrequested for a plurality of applications in step S2502. When aplurality of applications are requested to launch, it is determinedwhether the application compatibility information file 2201 exists instep S2503. When the file exists, the control thread 143 refers to thefile in step S2504. When the file does not exist, the applicationcompatibility information file is generated in step S2505, and thegenerated file is referred to. The process of the step S2505 will bedescribed later with reference to FIG. 64.

The application launch restriction thread 2142 determines whether thereare a pair of incompatible applications among the launch requestedapplications in step S2506. If such pair exists, launch restrictionprocess is performed in step S2507. The launch restriction process willbe described in detail later with reference to FIG. 65.

If there is no pair of incompatible applications, normal launch processis performed in step S2508.

FIG. 64 is a flowchart for explaining the process of generating theapplication compatibility information file 2201.

First, the control thread 143 determines whether applicationcompatibility information can be obtained via a network in step S2601.When the information can not be obtained via the network, the VAS 140provisionally launches the application that is requested to launch instep S2602. Then, the VAS 140 obtains the application compatibilityinformation in step S2603 from the application. Then, the file 201 forthe application is produced by using the application compatibilityinformation in step S2604. The application compatibility information foran application corresponds to a record of the file shown in FIG. 60.

As mentioned before, instead of producing the application compatibilityinformation file 2201, the user may prepare the applicationcompatibility information file 2201 and store it in the compound machine100.

FIG. 65 is a flowchart of the launch restriction process. This flowchartcorresponds to the step S2507 in FIG. 63.

When launch restriction is necessary for a pair of incompatibleapplications, it is determined whether one of the pair of theapplications is launched or launch is not performed for both of theapplications of the pair in step S2701. For example, this determinationcan be performed according to initial setting. When one application islaunched (Yes in step S2701), the VAS 140 determines whether there is aselection criterion in step S2702. The selection criterion may bepredetermined priorities, and may be recorded in the applicationcompatibility file. In addition, the version can be used as an exampleof a criterion, in which an application of a newer version is to beselected when the names of the applications of the pair are the same.

When there is no selection criterion, the VAS 140 displays a selectionscreen including an incompatible application list on the operation panelin step S2703. FIG. 62 shows an example of this screen. The launchrequested application list 2211 shows three application names with theversions. The incompatible application list 2212 shows two incompatibleapplications (verification AP and authentication AP) with otherinformation (version, attribute, target), and radio buttons are providedfor selection in the left side. The user refers to information displayedon the operation panel so that the user can easily select an applicationto be launched by checking a radio button in step S2704.

As mentioned above, when the user selects an application in step S2704,execution control is performed in which launch of applications that arenot selected is restricted in step S2705.

In the step S2702, if there is a selection criterion for an applicationto launch, an application selected according to the criterion islaunched, and launch of other applications is restricted in step S2706.

If launch of all incompatible applications is restricted in step S2701,or if the user does not select any application in step S2704, all of theincompatible applications are not launched in step S2707.

Although the above-mentioned example relates to actual launch ofapplications, exclusive control can be also performed when launchsetting is performed. In the case of launch setting, launch setting isperformed instead of an application is actually launched.

As mentioned above, according to the compound machine 100 of the thisembodiment, since exclusive control is performed to prevent incompatibleapplications from being launched simultaneously, the compound machine100 operates stably.

In addition, according to the compound machine of the this embodiment,when the application compatibility information is obtained via anetwork, the application compatibility information file can be easilyupdated to include newest information. Thus, a new application can besupported.

Sixth Embodiment

The compound machine 100 of the fifth embodiment includes one VAS forall applications. According to the compound machine of the sixthembodiment, a plurality of VASes 941-948 are launched for eachapplication in which each VAS performs the application compatibilityinformation obtaining process and the application launch restrictionprocess for a corresponding application.

FIG. 66 is a figure showing a configuration of the VASes 941-948 of thecompound machine 100 of the sixth embodiment, and relationship among theVASes 941-948, each application, control service layer 150 and generalOS 121.

According to the compound machine 100 of the sixth embodiment, differentfrom the compound machine 100 of the fifth embodiment, as shown in FIG.66, a VAS control process (daemon) 901 operates between the VASes andeach application. The VAS control process 901 generates the VASes941-948 for each corresponding application. The operation of the VAScontrol process 901 is similar to that of the control thread 143.

Each process of the VASes 941-948 includes the dispatcher 145 and thethreads 2141 and 2142. The function of each thread of the compoundmachine 100 of this embodiment is the same as that of correspondingthread of the fifth embodiment. According to the sixth embodiment, theprocessing for each application can be performed in parallel, so thatthe launch restriction process can be performed efficiently.

Seventh Embodiment

In this embodiment, the compound machine 100 can simultaneously launchapplications of indispensable relationship or recommended relationship.Applications of indispensable relationship means that executing oneapplication is indispensable for executing another application.Applications of recommended relationship means that executing oneapplication is recommended for executing another application.

The configuration of the compound machine 100 this embodiment is similarto that of the compound machine 100 of the fifth embodiment. Thefunctions of the VAS 140 are different between the fifth embodiment andthis embodiment.

The VAS 140 of the seventh embodiment refers to indispensableapplication information file 2202, and identify an application that canbe executed solely, and an application that requires another applicationto run. The indispensable application information file 2202 may beproduced by the VAS 140, or may be stored in the compound machine 100 bythe user. In addition, the compound machine 100 can obtain theindispensable application information file 2202 from a server via anetwork.

For example, in a case when a new capability can be provided by addinganother application (plug-in software) to an application, indispensableapplication information in the indispensable application informationfile 2202 may be information on the plug-in software. However, theindispensable application information is not limited to this. Theindispensable application information can be any information on pair ofapplications that can be executed simultaneously for providing acapability.

The VAS 140 can obtain indispensable application information via anetwork, and also can obtain the information from an application byprovisionally launching the application.

The VAS 140 obtains indispensable application information correspondingto an application that is requested to launch. If there is anindispensable application for the application, the VAS 140 controls thecompound machine 100 to launch both of the application and theindispensable application. For example, if launch of the indispensableapplication is not requested yet, launch of the applicationcorresponding to the indispensable application is not performed.Alternatively, for example, when the indispensable application isinstalled in the compound machine 100, the indispensable application isautomatically launched with the application. Further, for example,notification to urge the user to launch the indispensable applicationmay be output. The notification is, for example, information display onthe operation panel, voice guidance, warning sound and the like.

FIG. 67 shows the configuration of the VAS 140 of this embodiment, andshows relationship between the VAS 140, each application, the controlservice layer 150 and the general OS 121.

The process of the VAS 140 includes a dispatcher 144, a control thread143, an indispensable application information obtaining thread 2145, andan application launch control thread 2146. The function of thedispatcher 144 is the same as that of the fifth embodiment.

When the indispensable application information file 2202 does notinclude indispensable application information for an application, thecontrol thread 143 can request the thread 2145 to obtain necessaryindispensable application information. The obtained information isstored in the indispensable application information file 2202.

When the indispensable application information file 2202 includesnecessary indispensable application information, the control thread 143requests the application launch control thread 2146 to performapplication launch restriction according to the indispensableapplication information read from the file 2202.

Like the fifth embodiment, the indispensable application informationobtaining thread 2145 obtains indispensable application information byprovisionally launching the application or via network, and generatesthe indispensable application information file 2202. Alternatively, theindispensable application information file 2202 can be prepared andstored in the compound machine 100 by the user. In addition, thecompound machine 100 may obtain the indispensable applicationinformation file 2202 from a server.

FIG. 68 is an example of the indispensable application information file2202 stored in the HD 200. As shown in FIG. 68, the indispensableapplication information file 2202 records, for each application ID,presence or absence of indispensable application, application type,application ID of indispensable application.

When the application launch control thread 2146 receives an applicationlaunch request from the control service layer 150, the applicationlaunch control thread 2146 refers to the indispensable applicationinformation file 2202, and determines whether information on anapplication that is requested to launch is recorded in the file 2202. Ifthe information is recorded, it is determined whether there is anindispensable application corresponding to the application. If theindispensable application does not exist, the application is normallylaunched. If the indispensable application exists, the VAS 140 performslaunch control for the application and the indispensable application. InFIG. 68, the browser (ID: 103) and the plug-in (ID: 105) are mutuallyindispensable.

When information on the application that is requested to launch is notrecorded in the indispensable application information file 2202, theapplication launch control thread 142 requests the indispensableapplication information obtaining thread 2145 to obtain information onthe application.

FIG. 69 is an example of a screen for prompting the user to launch anindispensable application (plug-in) for a launch-requested-application(browser).

Next, the application launch control process performed by the VAS 140will be described. FIG. 70 shows a flowchart of the procedure.

When the dispatcher 144 receives an application launch request messagefrom the control service layer 150 in step S2801, the dispatcher 144sends the message to the control thread 143 with a process ID of theapplication. The control thread 143 checks whether information on thelaunch requested application is recorded in the indispensableapplication information file 2202 in step S2802. When the information isrecorded, the file 2202 is referred to in step S2803.

If the information is not recorded in the file 2202 in step S2802, thefile 2202 is prepared in step S2804, and the file 2202 is referred to instep S2803. The process of the step S2804 will be described later withreference to FIG. 71.

The application launch control thread 2146 determines whether there isan indispensable application corresponding to the launch requestedapplication by referring to the indispensable application informationfile 2202 in step S2805. If the indispensable application exists, launchcontrol process is performed in step S2806. If the indispensableapplication does not exist, the launch requested application is normallylaunched in step S2807. The launch control process for the applicationand the indispensable application will be described in detail later withreference to FIG. 72.

FIG. 71 is a flowchart for explaining the process of generating theindispensable application information file 2202.

First, the control thread 143 determines whether the indispensableapplication information can be obtained via a network in step S2901.When the information can not be obtained via the network, the VAS 140provisionally launches the launch requested application in step S2902.Then, the VAS 140 obtains necessary information in step S2903. Then, thefile 2202 for the application is produced by using the obtainedinformation in step S2904.

FIG. 72 is a flowchart showing launch control process for a pair of thelaunch-requested-application and the corresponding indispensableapplication.

As shown in FIG. 72, first, the application launch control thread 2146determines whether launch of the indispensable application is requestedin step S3001. If Yes, both of the application and the indispensableapplication are normally launched in step S3008.

In step S3002, it is determined whether the launch of thelaunch-requested-application should be restricted until theindispensable application is requested to launch. By storinginformation, in the file 2202, indicating whether the application shouldbe launched or not until the indispensable application is launched, theVAS 140 can perform the determination of step S3002 by referring to thefile 2202.

If the launch of the launch requested application should be restricted,a notification is output for prompting launch of the indispensableapplication in step S3003. As an example of the notification, an errormessage is displayed on the operation panel as shown in FIG. 69. Afteroutputting the notification, the process returns to the step S3001, andthe VAS 140 determines whether launch is requested for both of theapplication and the indispensable application. After the step S3003, ifthe user launches both of the application and the indispensableapplication, the applications are normally launched in step S3008 (Yesin step S3001).

In step S3002, if it is determined that launch of the launch requestedapplication is not restricted, it is determined whether thecorresponding indispensable application has been installed in thecompound machine 100 in step S3004. If the indispensable application hasbeen installed, the indispensable application is automatically launchednormally in steps S3007 and S3008.

If the indispensable application has not been installed in step S3004,it is determined whether the indispensable application is installable instep S3005. If installable, the indispensable application is installedand launched (steps S3006-S3008).

If the indispensable application is not installable in step S3005, theprocess ends since both of the applications can not be launched. At thistime, the VAS 140 can display a screen indicating that the indispensableapplication is not installable.

Although the above-mentioned process is performed when the applicationis actually launched, the similar process can be performed when launchsetting is performed for the application. In this case, instead ofactually launching the applications, launch setting is performed for theapplications.

As mentioned above, according to the compound machine 100 of the thirdembodiment, since the applications that are mutually indispensable canbe executed at the same time, the compound machine 100 can operatestably.

In the same way as the sixth embodiment, a plurality of VASes 941-948can be launched for each application in which each VAS performs theindispensable application information obtaining process and theapplication launch control process for a corresponding application.

FIG. 73 is a figure showing a configuration of the VASes 941-948 of thecompound machine 100, and relationship among the VASes 941-948, eachapplication, control service layer 150 and general OS 121.

Eighth Embodiment

In the following, the eighth embodiment will be described. The wholeconfiguration of the compound machine 100 of the Eighth embodiment isthe same as that of the first embodiment.

In the eighth embodiment, the compound machine 100 stores a databasethat can represent incompatible or unrecommended relationship andindispensable or recommended relationship for applications. The VAS 140performs launch control by referring to the database. In thisspecification, incompatible or unrecommended relationship may be calledsimply “incompatible relationship”, and indispensable or recommendedrelationship may be called simply “indispensable relationship”.

An example of the database file is shown in FIG. 74. As shown in FIG.74, the file shows indispensable or incompatible applications for eachapplication. In the field of “incompatible or indispensableapplication”, the number inside the parentheses indicates a level ofincompatible relationship or indispensable relationship. The larger theabsolute value in the minus side is, the higher the level ofincompatible relationship is. The larger the absolute value in the plusside is, the higher the level of indispensable relationship is. Forexample, “−1” means that although both of the applications can beexecuted simultaneously, it is not recommended to execute both of theapplications since there is a possibility that the speed of the systemmay be lowered. In addition, for example, “−3” means that theapplications can not be executed simultaneously. In addition, forexample, “+1” means that, although each of the applications can beexecuted solely, more functions can be provided if both of theapplications are executed simultaneously. In addition, for example, “+3”means that the applications should be executed simultaneously. As to theincompatible relationship, in addition to the above-mentioned level,priority of launch can be included. The VAS 140 performs launch controlby referring to the file shown in FIG. 74.

In addition to the information shown in FIG. 74, the file may include,for each pair of applications, a reason for being indispensable orincompatible relationship, and other information. By including suchinformation, the reasons can be displayed on the operation panel.

The above-mentioned file can be stored in the compound machine 100 bythe user. In addition, the compound machine 100 may obtain the file froma server. In the case when the file is stored in the server, if aproblem as to indispensability or incompatibility of applications isfound, the problem information can be sent to the server by using aproper format, so that the file can be automatically updated. Inaddition, when an application is developed and the application isindispensable for another application or is incompatible with anotherapplication, such information can be sent to the server, so that thefile can be automatically updated.

The file is not necessarily stored in the compound machine 100, and theVAS 140 can refer to the file that exists outside of the compoundmachine 100.

Next, the procedure of launch control by the compound machine 100 byusing the file shown in FIG. 74 will be described with reference to theflowchart shown in FIG. 75. The following procedure is for a case whenlaunch setting is performed.

First, the VAS 140 displays a screen for launch setting on the operationpanel in step S3101. An example of the launch setting screen is shown inFIG. 76. The screen shown in FIG. 76 shows that launch setting has beenalready performed for “simple copy”.

Next, the user selects an application (to be referred to as “selectedapplication” hereinafter) on which the user wants to perform launchsetting. The VAS 140 obtains the product ID of the selected application,and searches the file shown in FIG. 74 on the basis of the product ID instep S3102.

Then, the VAS 140 obtains product IDs and related information (such asreason for being incompatible or indispensable relationship)corresponding to the key product ID in step S3103. For exempla, in theexample of FIG. 74, if the product ID of the selected application is101, the VAS 140 obtains 102 (−3) and 103 (+1).

Then, the VAS 140 performs launch control according to the obtainedinformation.

If the application corresponding to the product ID obtained from thefile is an incompatible application against the selected application,that is, if the level is minus (Y in step S3104), the VAS 140 checks iflaunch setting has been performed for the incompatible application instep S3105. If launch setting has not been performed for theincompatible application, launch setting is performed for the selectedapplication in step S3106.

If launch setting has been performed for the incompatible application (Yin step S3105), the level is checked in step S3107. Then, the VAS 140displays a warning screen (S3108, if the level is low), or display aselection screen for selecting an application on which launch setting isperformed between the incompatible application and the selectedapplication (S3109). The warning screen shows information that inquiresthe user whether launch setting can be allowed for both of theapplications. When the warning screen is displayed, launch setting isstopped for one of the selected application and the incompatibleapplication or launch setting is performed for both of the applicationsin step S3110. When the selection screen is displayed, launch setting isperformed on an application selected in the selection screen in stepS3111. In this case, if the selected application is selected, launchsetting for the incompatible application is released.

When an application corresponding to the obtained product ID isindispensable for the selected application (N in step S3104), the VAS140 checks whether launch setting has been performed on theindispensable application in step S3112. If launch setting has beenperformed on the indispensable application, launch setting of theselected application is performed in step S3113. If launch setting hasnot been performed on the indispensable application, next process isperformed (N in step S3112).

The level of indispensable relationship is checked in step S3114. If thelevel is high so that the both applications should be executedsimultaneously, the VAS 140 displays a screen for prompting the user toperform launch setting on the indispensable application in step S3115.Then, launch setting is performed on the indispensable applicationaccording to determination of the user in step S3116. In this case,launch setting is performed for both of the selected application and theindispensable application.

For example, in the screen shown in FIG. 76, assuming that “simplescanner” is the indispensable application for the “edit print tool”,when “edit print tool” is selected for performing launch setting asshown in FIG. 77, a screen shown in FIG. 78 is shown since launchsetting has not been performed on “simple scanner”. When the user pushesthe OK button, launch setting is performed on both of “edit print tool”and “simple scanner”.

If the level of indispensable relationship is low in step S3114, thatis, if the level indicates recommended relationship (for example,extension can be provided by another application), the VAS 140 displaysa screen for notifying the user that the recommended application can addextension to the selected application in step S3117. Then, the VAS 140performs launch setting on both of the selected application and thecorresponding recommended application in step S3118.

For example, in the example of FIG. 77, if “user stamp add module” and“user comment add module” can add extension to “edit print tool”, thescreen shown in FIG. 79 is displayed. If OK button is pushed, launchsetting is performed for the three applications.

For performing launch setting for applications of indispensablerelationship, launch setting can be performed for the applicationswithout inquiring the user.

When the indispensable application that should be launched with theselected application is not installed in the compound machine 100, ascreen of FIG. 80 is displayed before displaying the screen of FIG. 78,so that the indispensable application can be downloaded. Instead ofdisplaying the screen for download, a screen showing reference of theapplication can be displayed as shown in FIG. 81.

In the above-mentioned example, in a case when an application that isselected for performing launch setting is incompatible with anotherapplication on which launch setting has been performed, the VAS 140 canrefer to the priorities between the selected application and the anotherapplication, and can automatically perform launch setting for anapplication that has a higher priority. For example, if the priority ofthe selected application is higher than the another application, the VAS140 can release the launch setting for the another application andperform launch setting for the selected application.

Although the above-mentioned example is for a case when launch settingis performed, the above-mentioned method can be applied to a case whenan application is actually launched.

As mentioned above, according to the present invention, an image formingapparatus in which applications can be installed is provided, and theimage forming apparatus includes: an application information obtainingpart for obtaining application information that is used for determiningwhether an application is installable in the image forming apparatus.

According to the present invention, it can be determined whether anapplication is installable.

In the image forming apparatus, the application information obtainingpart obtains the application information that is included in anexecution file of the application by using interprocess communicationbetween the application information obtaining part and the application.

The application information obtaining part may obtain the applicationinformation from a file separate from the application. For example, theapplication information can be obtained via a network.

In the image forming apparatus, the application causes the image formingapparatus to perform: a step of determining whether to provisionallylaunch the application or to normally launch the application accordingto a request from the application information obtaining part; a step ofproviding the application information to the application informationobtaining part if the application is provisionally launched. There,normal launch or provisional launch can be selected.

The image forming apparatus may further includes a storage for storingthe application information obtained by the application informationobtaining part. The storage is at least one of a hard disk, anonvolatile memory and a memory card, and the application informationobtaining part obtains the application information by readinginformation stored in the storage.

In addition, the application information includes a product ID that isspecific for the application. The application information may furtherincludes at least one of a vendor name, an application name, versioninformation and resource information.

In the image forming apparatus, the storage stores product IDs ofinstallable applications, and the image forming apparatus determineswhether a target application is installable by checking whether aproduct ID of the target application is stored. Thus, it becomes easy todetermine whether an application is installable.

In addition, according to the present invention, an image formingapparatus including an operation panel for displaying or inputtingoperation information is provided, and the image forming apparatusincludes:

an information obtaining part for obtaining application information onan application to be used in the image forming apparatus; and

a display part for displaying the application information or informationrelated to the application information on the operation panel.

According to the present invention, since application information isdisplayed on the operation panel, the user can determine whether anapplication is installable.

The image forming apparatus may further includes a determination partfor determining whether the application is installable in the imageforming apparatus according to the application information obtained bythe information obtaining part. Accordingly, the image forming apparatuscan automatically determine whether an application is installable. Thedisplay part can display one or more installable applications on theoperation panel according to the result of determination by thedetermination part, wherein an installable application can be selectedfrom the one or more installable applications.

In addition, the display part can display a reason why an application isnot installable according to the result of determination by thedetermination part. According to this invention, the user can know thereason why the application is not installable. For example, if anapplication is installable due lack of a hardware resource, the user canknow the reason.

In addition, the display part can display a warning when an applicationselected for install is already installed in the image formingapparatus.

In the image forming apparatus, the application information or theinformation related to the application information that is displayed onthe operation panel can be information necessary for determining whetherthe application is installable. According to this configuration, theuser can determines whether an application is installable.

The image forming apparatus may further include a part for causing aremote apparatus to display a screen that is the same as a screendisplayed on the operation panel. Accordingly, the user can operate theimage forming apparatus from the remote apparatus.

In addition, according to the present invention, an image formingapparatus in which a plurality of applications can be installed isprovided, in which the image forming apparatus includes:

an information obtaining part for obtaining necessary resourceinformation for executing an application and available resourceinformation in the image forming apparatus; and

a launch restriction part for comparing the necessary resourceinformation and the available resource information, and performinglaunch restriction process on the application according to the result ofcomparison between the necessary resource information and the availableresource information.

According to the present invention, the image forming apparatus canprevent erroneous launch of an application for which resources arelacking. Thus, the image forming can operate stably.

In the image forming apparatus, the image obtaining part can obtain, asthe necessary resource information, a usage record of a resource used bythe application. Therefore, accurate information can be obtained. Theinformation obtaining part can obtain the usage record from systeminformation that holds usage records used by processes in the imageforming apparatus.

In the image forming apparatus, the necessary resource informationindicates a necessary resource amount and the available resourceinformation indicates an available resource amount, and wherein thelaunch restriction part can display a ratio of the necessary resourceamount to the available resource amount on an operation panel. Accordingto this configuration, the user can grasp the ratio of the necessaryresource amount to the available resource amount.

In addition, the launch restriction part can display a warning on anoperation panel when the necessary resource amount is larger than theavailable resource amount. Therefore, the user can know lack ofresources for an application.

In the image forming apparatus, if the application can operate by usinga second resource that is different from a first resource correspondingto the necessary resource amount, the launch restriction part causes theapplication to use the second resource instead of the first resource.Therefore, even when a resource is lacking, the application can beexecuted by using another resource.

In addition, according to the present invention, an image formingapparatus in which a plurality of applications can be installed isprovided in which the image forming apparatus includes:

a part for referring to a database which includes, for each application,information on propriety of combination of applications; and

a launch control part for performing launch control process on anapplication according to the information on propriety.

According to the present invention, proper applications can be launchedaccording to the information on propriety of combination ofapplications.

In the image forming apparatus, the information on propriety indicatesincompatible relationship or unrecommended relationship among aplurality of applications, and the launch control part can display ascreen for selecting at least one application from among the pluralityof applications on an operation panel. Therefore, the user can select adesired application among mutually incompatible applications.

The launch control part may launch at least one application among theplurality of applications or performs launch setting on at least oneapplication among the plurality of applications. According to thisconfiguration, the image forming apparatus can prevent mutuallyincompatible applications from being launched simultaneously.

In addition, the lunch control part may display a warning screen on anoperation panel when combination of applications is unrecommended. Sincethe warning screen is displayed, the user can determines whether tolaunch one application or both of the applications.

In the image forming apparatus, the information on propriety canindicate a level of the incompatible relationship or the unrecommendedrelationship, in which the launch control part can perform the launchcontrol process according to the level.

In the image forming apparatus, the information on propriety mayindicate indispensable relationship or recommended relationship among aplurality of applications, wherein the launch control part can display ascreen showing an indispensable or recommended application for anotherapplication on an operation panel. According to this configuration, theuser can select the indispensable or recommended application.

In addition, launch control part can launch an indispensable orrecommended application for another application, or performs launchsetting on the indispensable or recommended application for anotherapplication. When the indispensable or recommended application is notinstalled in the image forming apparatus, the launch control part candownload the indispensable or recommended application from a server viaa network. Also, the launch control part can display information thatcan be used for obtaining the indispensable or recommended application.

In the image forming apparatus, the information on propriety can furtherindicate a level of the indispensable relationship or the recommendedrelationship, in which the launch control part can perform the launchcontrol process according to the level.

The present invention is not limited to the specifically disclosedembodiments, and variations and modifications may be made withoutdeparting from the scope of the present invention.

1. An image forming apparatus including an operation panel fordisplaying or inputting operation information, the image formingapparatus comprising: an information obtaining part for obtainingapplication information on an application to be used in the imageforming apparatus; and a display part for displaying the applicationinformation or information related to the application information on theoperation panel.
 2. The image forming apparatus as claimed in claim 1,the image forming apparatus further comprising: a determination part fordetermining whether the application is installable in the image formingapparatus according to the application information obtained by theinformation obtaining part.
 3. The image forming apparatus as claimed inclaim 2, wherein the display part displays one or more installableapplications on the operation panel according to the result ofdetermination by the determination part, wherein an installableapplication can be selected from the one or more installableapplications.
 4. The image forming apparatus as claimed in claim 3,wherein the display part displays information including applicationnames and application outline descriptions for the one or moreapplications.
 5. The image forming apparatus as claimed in claim 2,wherein the display part displays a reason why an application is notinstallable according to the result of determination by thedetermination part.
 6. The image forming apparatus as claimed in claim2, wherein the display part displays a warning when an applicationselected for install is already installed in the image formingapparatus.
 7. The image forming apparatus as claimed in claim 1, whereinthe application information or the information related to theapplication information that is displayed on the operation panelincludes information necessary for determining whether the applicationis installable.
 8. The image forming apparatus as claimed in claim 7,wherein the information necessary for determining whether theapplication is installable includes version information of theapplication and version information of the image forming apparatus. 9.The image forming apparatus as claimed in claim 7, wherein theinformation necessary for determining whether the application isinstallable includes necessary resource information of the applicationand available resource information of the image forming apparatus. 10.The image forming apparatus as claimed in claim 1, wherein the displaypart displays an install operation screen or an uninstall operationscreen by using the application information, the image forming apparatusfurther comprising: a part for performing install process or uninstallprocess for the application according to operations on the installoperation screen or the uninstall operation.
 11. The image formingapparatus as claimed in claim 1, the image forming apparatus furthercomprising a part for causing a remote apparatus to display a screenthat is the same as a screen displayed on the operation panel.
 12. Amethod used for displaying operation information on an operation panelin an image forming apparatus, the image forming apparatus comprising:an information obtaining step of obtaining application information on anapplication to be used in the image forming apparatus; and a displaystep of displaying the application information or information related tothe application information on the operation panel.
 13. The method asclaimed in claim 12, the method further comprising: a determination stepof determining whether the application is installable in the imageforming apparatus according to the application information.
 14. Themethod as claimed in claim 13, wherein the image forming apparatusdisplays one or more installable applications on the operation panelaccording to the result of the determination step, wherein aninstallable application can be selected from the one or more installableapplications.
 15. The method as claimed in claim 14, wherein the imageforming apparatus displays information including application names andapplication outline descriptions for the one or more applications. 16.The method as claimed in claim 13, wherein the image forming apparatusdisplays a reason why an application is not installable according to theresult of the determination step.
 17. The method as claimed in claim 13,wherein the image forming apparatus displays a warning when anapplication selected for install is already installed in the imageforming apparatus.
 18. The method as claimed in claim 12, wherein theapplication information or the information related to the applicationinformation that is displayed on the operation panel includesinformation necessary for determining whether the application isinstallable.
 19. The method as claimed in claim 18, wherein theinformation necessary for determining whether the application isinstallable includes version information of the application and versioninformation of the image forming apparatus.
 20. The method as claimed inclaim 18, wherein the information necessary for determining whether theapplication is installable includes necessary resource information ofthe application and available resource information of the image formingapparatus.
 21. The method as claimed in claim 12, wherein the imageforming apparatus displays an install operation screen or an uninstalloperation screen by using the application information, wherein the imageforming apparatus performs install process or uninstall process for theapplication according to operations on the install operation screen orthe uninstall operation.
 22. The method as claimed in claim 12, whereinthe image forming apparatus causes a remote apparatus to display ascreen that is the same as a screen displayed on the operation panel.23. A computer program to be executed on an image forming apparatusincluding an operation panel for displaying or inputting operationinformation, the computer program comprising: information obtainingprogram code means for obtaining application information on anapplication to be used in the image forming apparatus; and displayprogram code means for displaying the application information orinformation related to the application information on the operationpanel.
 24. A computer readable medium storing program code to beexecuted on an image forming apparatus including an operation panel fordisplaying or inputting operation information, the computer readablemedium comprising: information obtaining program code means forobtaining application information on an application to be used in theimage forming apparatus; and display program code means for displayingthe application information or information related to the applicationinformation on the operation panel.